 define([], {
        Unknown: 0,         // unsupported or invalid field.
        PushButton: 1,      // push button without any value.
        RadioButton: 2,     // a group of radio buttons, at most one item can be selected.
        CheckBox: 3,        // check box with on/off states.
        Text: 4,            // single line or multi-line texts.
        RichText: 5,        // rich text (using XML to store rich text).
        File: 6,            // file content.
        ListBox: 7,         // list box, single or multiple selections.
        ComboBox: 8,        // combo box with or without the edit box.
        Sign: 9             // digital signature.
    }
);